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Which two statements about SCSI are true？ （）
A . The bus is limited to 32 devices
B . It is a full duplex serial standard
C . It is a half-duplex serial standard
D . It allows up to 320 MB/s of shared channel bandwidth
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Which two statements about zoning are correct? （）
A . Zoning increases security.
B . DNS queries are used for software zoning.
C . Software zoning is more secure than hardware zoning.
D . When using zones and VSANs together, the zone is created first.
E . Zoning requires that VSANs be established before it becomes operational.
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Which two statements are correct about database transportation?（） (Choose two.)
A . The source and target platforms must be the same
B . Redo logs, control files and temp files are also transported
C . The transported database must have the same database identifier (DBID) as the source database and cannot be changed
D . The COMPATIBLE parameter must be set to 10.0.0.0 or higher and the database must be opened in readonly mode before being transported
E . Recovery Manager (RMAN) is used to convert the necessary data files of the database if the target platform is different and has different endian format
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Which two statements about subqueries are true? （）
A . A single row subquery can retrieve data from only one table.
B . A SQL query statement cannot display data from table B that is referred to in its subquery, unless table B is included in the main query's FROM clause.
C . A SQL query statement can display data from table B that is referred to in its subquery, without including table B in its own FROM clause.
D . A single row subquery can retrieve data from more than one table.
E . A single row subquery cannot be used in a condition where the LIKE operator is used for comparison.
F . A multiple-row subquery cannot be used in a condition where the LIKE operator is used for comparison.
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Which two statements are true regarding views?（）
A . A subquery that defines a view cannot include the GROUP BY clause
B . A view that is created with the subquery having the DISTINCT keyword can be updated
C . A view that is created with the subquery having the pseudo column ROWNUM keyword cannot be updated
D . A data manipulation language (DML) operation can be performed on a view that is created with the subquery having all the NOT NULL columns of a table
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Which two statements about WRED are true？ （）
A . WRED can selectively discard lower priority traffic when the interface becomes congested and can provide differentiated performance characteristics for different classes of service.
B . Resource Reservation Protocol （RSVP） and WRED cannot be configured on the same interface.
C . WRED will throttle back voice traffic only as a last resort.
D . If the average queue length is greater than the minimum threshold but less than the maximum threshold， then based on the drop probability， WRED will either queue the packet or perform a random drop.
E . WRED statistically drops more packets from low-bandwidth users than high-bandwidth users. Therefore， traffic sources that generate the least traffic are more likely to be slowed down than traffic sources that generate the most traffic.
F . WRED treats non-IP traffic as precedence 4.
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Which two statements are true about alerts（）
A . Clearing an alert sends the alert to the alert history.
B . Response actions cannot be specified with server-generated alerts.
C . The nonthreshold alerts appear in the DBA_OUTSTANDING_ALERTS view.
D . Server-generated alerts notify the problems that cannot be resolved automatically and requireadministrators to be notified.
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Which two statements are true about checkpointing（）
A . The checkpoint frequency decreases with the smaller redo log file size.
B . It ensures that all committed data is written to the data files during normal shutdown.
C . The frequent full checkpoint in a database can cause the overall degradation of the database performance.
D . It prompts the Checkpoint （CKPT） process to write data to the data files and redo information to the online redo log files.
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Which two statements are true regarding listeners（）
A . Listeners use only the TCP/IP protocol.
B . Multiple listener processes can run simultaneously on a host.
C . Multiple database instances can be registered with a single listener.
D . The listener-related errors can be traced only at the administrative level.
E . Only one database instance can be registered with a single listener at any time.
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Which two statements are true about constraints? （）
A . The UNIQUE constraint does not permit a null value for the column.
B . A UNIQUE index gets created for columns with PRIMARY KEY and UNIQUE constraints.
C . The PRIMARY KEY and FOREIGN KEY constraints create a UNIQUE index.
D . The NOT NULL constraint ensures that null values are not permitted for the column.
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What two statements are true regarding the recommendations received from the SQL Access Advisor？（）
A . It cannot generate recommendations that support multiple workload queries.
B . It can recommend partitioning on tables provided that the workloads have some predicates and joins on the columns of the NUMBER or DATE type.
C . It can recommend partitioning only on tables that have at least 10，000 rows.
D . It can recommend only B-tree indexes and not bitmap or function-based indexes.
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Which two statements about zoning are correct？（）
A . Zoning increases security.
B . DNS queries are used for software zoning.
C . Software zoning is more secure than hardware zoning.
D . When using zones and VSANs together， the zone is created first.
E . Zoning requires that VSANs be established before it becomes operational.
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Which two statements are true？（）
A . It is possible for more than two threads to deadlock at once.
B . The JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.
C . Deadlocked threads release once their sleep（） method’s sleep duration has expired.
D . Deadlocking can occur only when the wait（）， notify（）， and notifyAll（） methods are used incorrectly.
E . It is possible for a single-threaded application to deadlock if synchronized blocks are used incorrectly.
F . If a piece of code is capable of deadlocking， you cannot eliminate the possibility ofdeadlocking by insertinginvocations of Thread.yield（）.
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Refer to the exhibit. What two statements are true？（）https://assets.asklib.com/images/image2/2018072615071070209.jpg
A . The IP address of the backup designated router （BDR） is FE80：：205：5FFF：FED3：5808
B . This is the designated router （DR） on the FastEthernet 0/0 link
C . Interface FastEthernet 0/0 was configured with the ipv6 ospf 1 area 1 command
D . OSPF version 2 has been enabled to support IPv6
E . The output was generated by the show ip interface command
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Refer to the exhibit. What two statements are true?（）https://assets.asklib.com/images/image2/2018073014095357352.jpg
A . This is the designated router (DR) on the FastEthernet 0/0 link.
B . The output was generated by the show ip interface c ommand.
C . The router was configured with the commands:r outer ospf 1 network 172.16.6.0 0.0.0.255 area 1
D . The IP address of the backup designated router (BDR) is FE80::205:5FFF:FED3:5808.
E . Interface FastEthernet 0/0 was configured with the ipv6 o spf 1 area 1 command.
F . OSPF version 2 has been enabled to support IPv6.
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Evaluate the following statements:
https://assets.asklib.com/images/image2/201808020932369103.jpg
What are the two consequences of the above statements?（）
A . Partitions of PURCHASE_ORDER_ITEMS have system-generated names.
B . Both PURCHASE_ORDERS and PURCHASE_ORDER_ITEMS tables are created with four partitions each.
C . Partitions of the PURCHASE_ORDER_ITEMS table exist in the same tablespaces as the partitions of the PURCHASE_ORDERS table.
D . The PURCHASE_ORDER_ITEMS table inherits the partitioning key from the parent table by automatically duplicating the key columns.
E . Partition maintenance operations performed on the PURCHASE_ORDER_ITEMS table are automatically reflected in the PURCHASE_ORDERS table.
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Which two multicast protocol statements are true？ （Choose two.） （）
A . Dense mode multicast requires explicit join messages from their members.
B . Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted traffic.
C . Sparse mode multicast uses a pull model to send multicast traffic to where it is requested.
D . Sparse mode uses reverse path forwarding （RPF） to prune off redundant flows.
E . The primary use of sparse mode multicast is for test labs and router performance testing.
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Refer to the exhibit. Analyze the two traceroutes that are displayed. Which of these statements is correct in describing what most likely caused the traceroute differences?（）https://assets.asklib.com/images/image2/201807311525043528.jpg
A . Do not fragment has been configured on PE11.
B . MPLS has been disabled on routers P11 and P12.
C . An access list has been created on P11 to block traceroutes from PE11.
D . The no mpls ip propgate-ttl local command has been configured on PE11
E . ICMP has been disabled on the intermediary routers between PE11 and PE12.
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Which two statements are true?（）
A . It is possible for more than two threads to deadlock at once.
B . The JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.
C . Deadlocked threads release once their sleep() method's sleep duration has expired.
D . Deadlocking can occur only when the wait(), notify(), and notifyAll() methods are used incorrectly.
E . It is possible for a single-threaded application to deadlock if synchronized blocks are used incorrectly.
F . If a piece of code is capable of deadlocking, you cannot eliminate the possibility of deadlocking by inserting invocations of Thread.yield().
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Which two of statements are true？（）
A . It is possible to synchronize static methods.
B . When a thread has yielded as a result of yield（）， it releases its locks.
C . When a thread is sleeping as a result of sleep（）， it releases its locks.
D . The Object.wait（） method can be invoked only from a synchronized context.
E . The Thread.sleep（） method can be invoked only from a synchronized context.
F . When the thread scheduler receives a notify（） request， and notifies a thread， that thread immediately releases its lock.
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Which two statements are correct? Choose two answers.
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What are the two aspects in building the pro forma financial statements（）
A．Generate revenue
B．Develop key assumptions
C．Building and integrating the three statements
D．Predict expenditures
此题为多项选择题。
